FBI agents are not paid in hourly wages, they are paid through the federal government system GS ratings which provides agents an annual salary rating for years served.
The tariff of the United States, like all actual protective tariffs, is partly revenue and partly protective, its original purpose of yielding revenue having been subordinated to that of giving protection, until it may now be best described as a protective tariff yielding incidental revenue.
To protect their businesses and local markets from foreign competition, countries have one very potent tool they can utilize: the protective tariff. Protective tariffs are taxes, duties, or other roadblocks (generally in the form of monetary fees) placed on foreign goods by a national or state government in order to protect domestic products and markets.